Starting from the change in decision-makers’ risk attitude, which suggests “an increase in risk leads to a heightened tendency for risk aversion”, this study explores the nonlinear relationship between idiosyncratic risk and corporate cash holdings. Empirical analysis results indicate that, with the enhancement of decision-makers’ risk-averse degree, the marginal increase in corporate cash holdings presents an upward trend as idiosyncratic risk rises. Associated with the changes in managers’ risk attitude, the nonlinear relationship between idiosyncratic risk and corporate cash holdings becomes insignificant when the firm purchases directors’ liability insurance or is located in regions with better business environments. However, if the executives are older or hold academic titles, the increase in corporate cash holdings with the rise of idiosyncratic risk is more rapid.